Couch arm



FIG. 1 is a front, top and left side perspective view of a couch arm showing my new design;

FIG. 2 is a front, top and left side perspective view thereof showing a fold-out portion extended;

FIG. 3 is a rear, top and right side perspective view thereof;

FIG. 4 is a rear, top and right side perspective view thereof showing fold-out portions extended;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side elevational view thereof showing fold-out portions extended, the left side elevational view is a mirror image thereof;

FIG. 7 is a front elevational view thereof; and,

FIG. 8 is a right side elevational view thereof, the left side elevational view is a mirror image thereof.

The bottom plan view is not illustrated as it forms no part of the claimed design. The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a couch arm, as shown and described. 